<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="d3.js"></script>                                  <!--1-->
  <script src="examples-demo1.js"></script>                      <!--2-->
</head>

<body onload="makeDemo1()">                                      <!--3-->
  <svg id="demo1" width="600" height="300"
       style="background: lightgrey" />                          <!--4-->
</body>
</html>
